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Merck
CN

13803

Sulfur

99.5-100.5%, meets analytical specification of Ph. Eur., BP, USP, puriss., precipitated

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About This Item

Empirical Formula (Hill Notation):
S
CAS Number:
Molecular Weight:
32.07
NACRES:
SB.54
PubChem Substance ID:
UNSPSC Code:
12141912
EC Number:
231-722-6
MDL number:
Assay:
99.5-100.5%
Form:
solid
Solubility:
carbon disulfide: in accordance 1 g/5mL
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Quality Segment

vapor density

8.9 (vs air)

vapor pressure

1 mmHg ( 183.8 °C), 10 mmHg ( 246 °C)

grade

puriss.

assay

99.5-100.5%

form

solid

autoignition temp.

450 °F

quality

meets analytical specification of Ph. Eur., BP, USP, precipitated

resistivity

2E23 μΩ-cm, 20°C

impurities

acidity or alkalinity, complies, residual solvents, complies, ≤0.01% free alkali (as NaOH), ≤0.02% free acid (as H2SO4), ≤0.5% water (Karl Fischer)

ign. residue

≤0.2% (as SO4), ≤0.3%

bp

444.7 °C (lit.)

mp

112.8 °C (rhombic) (lit.), 117-120 °C (lit.), 119.0 °C (monoclinic) (lit.)

solubility

carbon disulfide: in accordance 1 g/5mL

anion traces

chloride (Cl-): ≤100 mg/kg, sulfate (SO42-): ≤100 mg/kg, sulfide (S2-): ≤10 mg/kg

cation traces

As: ≤40 mg/kg

suitability

complies for appearance of solution, corresponds for odor

SMILES string

[S]

InChI

1S/S

InChI key

NINIDFKCEFEMDL-UHFFFAOYSA-N

General description

Sulfur is present in abundant quantities in marine and freshwater sediments. It exists in the form of various sulfur compounds such as pyrite, acid volatile sulfides, elemental sulfur, sulfates and organic sulfur.Quantitative estimation of reduced inorganic sulfur compounds in modern sediments and shales by a chromium reduction technique has been described.
Sulfur is naturally present in cysteine and methionine amino acids, which can be detected by inductively coupled plasma mass spectrometry(ICP-MS). It is also an important element required for plant growth, since it is useful in lowering the pH of the soil.


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pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Skin Irrit. 2

Storage Class

4.1B - Flammable solid hazardous materials

flash_point_f

Not applicable

flash_point_c

Not applicable



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